An Introduction to BotanyLongman, Orme, Brown, Green, and Longmans, 1839 - 594 páginas |
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Página iv
... a short time occupied the attention of ob- servers , or which depend upon obscure and ill - under- stood evidence , are less clearly defined than could be wished . To explain those principles ; to adduce the iv PREFACE .
... a short time occupied the attention of ob- servers , or which depend upon obscure and ill - under- stood evidence , are less clearly defined than could be wished . To explain those principles ; to adduce the iv PREFACE .
Página v
... less important purpose has been to demonstrate , by a series of well - connected proofs , that in no department of natural history are the sim- plicity and harmony that pervade the universe more strikingly manifest than in the vegetable ...
... less important purpose has been to demonstrate , by a series of well - connected proofs , that in no department of natural history are the sim- plicity and harmony that pervade the universe more strikingly manifest than in the vegetable ...
Página 7
... less rapidly , when it is broken into minute portions , and is carried along by the growing membrane . In direction it is variable ( Plates I. and II . ) ; sometimes it is straight , and attains a considerable length , as in some fungi ...
... less rapidly , when it is broken into minute portions , and is carried along by the growing membrane . In direction it is variable ( Plates I. and II . ) ; sometimes it is straight , and attains a considerable length , as in some fungi ...
Página 10
... less frequently pierced with transverse slits , which are occasionally so numerous as to transform the bladders into a real articulated tissue , as in the pith of the Nelumbium ( fig . 5. ) . " This statement is now well known to have ...
... less frequently pierced with transverse slits , which are occasionally so numerous as to transform the bladders into a real articulated tissue , as in the pith of the Nelumbium ( fig . 5. ) . " This statement is now well known to have ...
Página 24
... less than that of the finest human hair ; the tubes of hemp , for example , when completely separated , are nearly six times smaller . It must , however , be observed , that the fibres of this plant , as used in linen - making , are by ...
... less than that of the finest human hair ; the tubes of hemp , for example , when completely separated , are nearly six times smaller . It must , however , be observed , that the fibres of this plant , as used in linen - making , are by ...
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Palavras e frases frequentes
Adolphe Brongniart anther apex appears arranged axis bark base become bladders body botanists bracts branches brown buds bundles called calyx Candolle carbonic acid carpels cavity cells cellular tissue centre chalaza colour colourless common considered consists corolla cotyledons dehiscence developement dicotyledons direction disk dissepiments distinct Dutrochet elongated embryo Endogens epidermis exist Exogens external extremity fibres fleshy flowers fluid fruit glands grains granules green growing hairs hilum indehiscent inflorescence integument kind layers leaf leaflets leaves Linnæus lobes margin matter medullary rays membrane midrib Mirb Mirbel modifications Mohl monocotyledons nature nucleus observations organs ovary ovule oxygen parenchyma peculiar pericarp petals petiole pistil pith placenta plants Plate pollen produced quantity radicle receptacle remarkable roots round seeds separate side sometimes species spiral vessels sporangium stamens stem stigma stomates structure substance surface term terminating tion tree tubes valves vascular vegetable veins wood woody tissue yellow
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